Has anyone suggested it might be suspension related. Maybe to much compression under load or possibly the tires were improperly labeled. Lots of folks run PSS 265's in the rear including myself with zero rubbing issues. It seems odd that some of us have no issues and others have issues with the same setup. I even had my car lowered and they worked perfect after that too.
Anyhow hope it works out for you. Those tires are awesome.